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<?php |
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declare(strict_types=1); |
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/** |
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* Saito - The Threaded Web Forum |
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* |
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* @copyright Copyright (c) the Saito Project Developers |
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* @link https://github.com/Schlaefer/Saito |
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* @license http://opensource.org/licenses/MIT |
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*/ |
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namespace Saito\User\LastRefresh; |
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use Saito\User\CurrentUser\CurrentUserInterface; |
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/** |
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* handles last refresh time for the current user |
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*/ |
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abstract class LastRefreshAbstract implements LastRefreshInterface |
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{ |
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/** |
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* @var CurrentUserInterface |
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*/ |
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protected $_CurrentUser; |
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/** |
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* @var mixed storage object depending on implementation |
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*/ |
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protected $_storage; |
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/** |
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* Constructor |
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* |
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* @param CurrentUserInterface $CurrentUser current-user |
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* @param mixed $storage storage a storage handler |
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*/ |
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public function __construct(CurrentUserInterface $CurrentUser, $storage = null) |
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{ |
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$this->_CurrentUser = $CurrentUser; |
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$this->_storage = $storage; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function isNewerThan($timestamp): ?bool |
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{ |
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$lastRefresh = $this->_get(); |
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if ($lastRefresh === null) { |
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// timestamp is not set (or readable): everything is considered new |
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return null; |
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} |
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return $lastRefresh > dateToUnix($timestamp); |
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} |
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/** |
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* Returns last refresh timestamp |
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* |
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* @return int|null Unix-timestamp or null if last refresh isn't set yet. |
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*/ |
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abstract protected function _get(): ?int; |
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/** |
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* {@inheritDoc} |
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*/ |
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public function set(): void |
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{ |
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$timestamp = new \DateTimeImmutable(); |
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$this->_set($timestamp); |
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$this->_CurrentUser->set('last_refresh', $timestamp); |
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// All postings indiviually marked as read are now older than the |
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// last-refresh timestamp and can be removed. |
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$this->_CurrentUser->getReadPostings()->delete(); |
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} |
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/** |
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* Set timestamp implementation |
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* |
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* @param \DateTimeImmutable $timestamp timestamp to set |
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* @return void |
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*/ |
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abstract protected function _set(\DateTimeImmutable $timestamp): void; |
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} |
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Schlaefer /
Saito
